Chapter 1: Problem 8
Use the point on the line and the slope of the line to find three additional points that the line passes through. (There is more than one correct answer.) $$ \frac{\text { Point }}{(-2,-2)} \quad \frac{\text { Slope }}{m=2} $$
Chapter 1: Problem 8
Use the point on the line and the slope of the line to find three additional points that the line passes through. (There is more than one correct answer.) $$ \frac{\text { Point }}{(-2,-2)} \quad \frac{\text { Slope }}{m=2} $$
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Get started for freeIn Exercises \(25-34,\) find the limit. $$ \lim _{x \rightarrow 1 / 2} x \sec \pi x $$
Average Speed On a trip of \(d\) miles to another city, a truck driver's average speed was \(x\) miles per hour. On the return trip. the average speed was \(y\) miles per hour. The average speed for the round trip was 50 miles per hour. (a) Verify that \(y=\frac{25 x}{x-25}\) What is the domain? (b) Complete the table. \begin{tabular}{|l|l|l|l|l|} \hline\(x\) & 30 & 40 & 50 & 60 \\ \hline\(y\) & & & & \\ \hline \end{tabular} Are the values of \(y\) different than you expected? Explain. (c) Find the limit of \(y\) as \(x \rightarrow 25^{+}\) and interpret its meaning.
In Exercises \(35-38\), use a graphing utility to graph the function and determine the one-sided limit. $$ \begin{array}{l} f(x)=\frac{x^{2}+x+1}{x^{3}-1} \\ \lim _{x \rightarrow 1^{+}} f(x) \end{array} $$
True or False? Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. If \(f(x)=g(x)\) for \(x \neq c\) and \(f(c) \neq g(c),\) then either \(f\) or \(g\) is not continuous at \(c\).
Verify that the Intermediate Value Theorem applies to the indicated interval and find the value of \(c\) guaranteed by the theorem. $$ f(x)=\frac{x^{2}+x}{x-1}, \quad\left[\frac{5}{2}, 4\right], \quad f(c)=6 $$
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